168 Mr. R. Ridgway on the Genus Helminthophaga. 3 
reddish brown, chiefly round the larger end. Several of the 
species (notably ruficapilla, virginia, lucie, and celata) are 
pleasing though rather weak-voiced songsters, while the song 
of H. pinus closely resembles the monotonous lisping of certain 
grasshoppers. 
The species and geographical races may be distinguished 
by the following characters :— 
A. Wings variegated with white or yellow. Forehead yellow. 
a. Wing with two white bands; belly yellow; back olive-green. 
1. H. prnus. Throat gamboge-yellow; auriculars yellow, bordered 
above by a short postocular streak. Eastern province of the 
United States, in summer. 
2. H. tawrencu. Throat deep black; auriculars deep black. 
Eastern Province of the United States (New Jersey, Herrick). 
6. Wing with a large patch of yellow covering both rows of coverts ; 
belly white; back bluish grey. 
3, H. eee! Throat deep black (¢) or dull grey (92) 
auriculars deep black (¢), or black along upper edge (2). 
Eastern Province of the United States. 
4, H. LEUCOBRONCHIALIS. Throat pure white; auriculars white, 
bordered above by a short postocular streak. Hastern Province 
of the United States (Eastern Massachusetts, Brewster). 
B. Wings not variegated. Forehead not yellow (except in H. bachmant). 
a. Forehead yellow; inner web of the two outer tail-feathers with a 
terminal white patch. 
5. H. BacHMANI. Above olive-green ; forehead and belly gamboge- 
yellow ; crown grey, in the ¢ bordered anteriorly by a black 
bar; throat black (3) or dusky greyish (9). Eastern Province 
(Southern Atlantic States) and Cuba. 
6. Forehead greyish ; inner webs of outer tail-feathers without distinct 
white patches. 
6. H. RUFICAPILLA. Above olive-green; the head greyish; lower 
parts gamboge-yellow; a whitish orbital ring. Male with a 
concealed patch of chestnut onthe crown. North America (rare 
in the Western Province). 
. H. vireinre. Above grey, beneath whitish ; upper tail-coverts 
yellowish green ; lower tail-coverts and patch on the jugulum 
gamboge-yellow; crown with a concealed patch of chestnut 
(sometimes obsolete in the 2). Western Province. 
8. H. nuctm. Above grey, beneath buffy white; crown-patch and 
upper tail-coverts chestnut, Western Province (south-western 
district). 
9..H. crenata. Above olive-green, beneath pale yellowish ; crown 








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